Thermocont® TS4L

Delivery Time: not specified

Temperaturesensors and -transmitters Pt100 with self-monitoring for food

  • Suitable for hygienic applications
  • Self-verifying measured value
  • Housing and display can be rotated



The devices of series Thermocont® TS4L with integrated digital evaluation electronic are compact temperature switches for monitoring, control as well as continuous measurement of process temperatures from –99,9°C to +500°C in gases, vapors, liquids and dusts in hygienic application fields at process pressures of up to 40 bar.

Suitable for hygienic and aseptic applications in
• Food and beverage industry
• Pharmaceutical industry
• Biotechnology
• Sterile process engineering



The device is mounted into the wall of the container or of the pipeline. By using a neck tube of a adequate length between the respective process connection and the connection housing at high medium temperatures it can be achieved that the temperature in the area of the connection housing does not exceed the permitted environmental temperatures. The sensor tube is the junction point with the applied medium and is in direct contact with it. It contains the temperature sensor that is used for recording the temperature and converting it into an electrical signal. At the device Thermocont® TL4S the recording of the process temperature is made by a resistive temperature sensor element Pt100 of class A. This allows a precise and long term stable temperature measurement. At device Thermocont® TS4L the recording of the process temperature is made in parallel at first by a resistive temperature sensor element Pt100 of class A and second by a semiconductor temperature sensor. Because of the parallel measurement with two different thermal coupled sensor elements, the temperature switch detects impermissible drifts of a sensor and errors at the temperature measurement automatically. At the failure of one of the two sensor elements the temperature measurement can be also continued with the second element, what realizes a redundancy function.

4_20mA_2_PNP LED_Anzeige 4_20mA_2_PNP CIP_SIP V4A
Auxiliary power
Supply voltage 10,5 V…35 V DC, reverse polarity protected
Supply current ≤ 60mA
Analogue output max. 22,5mA Switch output with no load
Switch output S1 / S2
Function PNP switch to +L
Output current 0mA… ≤ 200mA
power limited
short circuit protected
Analogue output 4…20mA
Operating Range 3,9mA…21mA
min. 3,8mA
max. 22mA
Permitted load ≤ (US – 10,5) / 20mA
Start-up time ≤ 1s
Measuring accuracy
Characteristic deviation Display / Switch output: ≤ ±0,6K bei ±100°C
Current output: ≤ ±0,9K bei ±100°C
Display / Switch output: ≤ ±0,2K (Type self-supervision)
Current output: ≤ ±0,4K (bei Typ Selbstüberwachung)
Drift monitoring: ≤ ±0,2K (Type self-supervision)
Long term drift ≤ ±0,1% FS/year
Temperature deviation Display / Switch output: ≤ ±0,003% FS/K
Current output: ≤ ±0,008% FS/K
Sensor tube
(process wetted)
Steel 1.4404 (AISI 316L)
Steel 1.4571 (AISI 316Ti)
Process connection
(process wetted)
Steel 1.4404 (AISI 316L)
Steel 1.4571 (AISI 316Ti)
Surface quality Ra < 0,8µm
Neck tube CrNi-Steel
Junction housing CrNi-Steel
Control panel surface PES
Electrical connection part Device plug PUR
Pressure compensation element Acrylic copolymer
(process wetted)
FPM – fluorelastomere (z.B. Viton®)
Environmental conditions
Environmental temperature -40°C…+85°C
Process temperature -100°C…+500°C (depending on type)
Process pressure 0bar…+100bar (depending on type)
Protection class IP65 (EN/IEC 60529)
IP67 (EN/IEC 60529)

Documentation german

User manual

Documentation english

User manual

Product configurator